/****************************************************************************
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** Copyright (C) 2019 Luxoft Sweden AB
** Copyright (C) 2018 Pelagicore AG
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**
** This file is part of the Qt Application Manager.
**
** $QT_BEGIN_LICENSE:LGPL-QTAS$
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
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** SPDX-License-Identifier: LGPL-3.0
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****************************************************************************/

#pragma once

#include <QtAppManCommon/global.h>
#include <QStringList>
#include <QVariantMap>
#include <QVector>
#include <QCommandLineParser>

QT_BEGIN_NAMESPACE_AM

class Configuration
{
public:
    virtual ~Configuration();
    void parse(QStringList *deploymentWarnings = nullptr);
    virtual void parseWithArguments(const QStringList &arguments, QStringList *deploymentWarnings = nullptr);
    QVariant buildConfig() const;

protected:
    Configuration(const QStringList &defaultConfigFilePaths, const QString &buildConfigFilePath);

    enum MessageType { UsageMessage, ErrorMessage };

    void showParserMessage(const QString &message, MessageType type);

    template <typename T> T value(const char *clname, const QVector<const char *> &cfname = QVector<const char *>()) const
    {
        Q_UNUSED(clname)
        Q_UNUSED(cfname)
        return T();
    }

private:
    QVariant findInConfigFile(const QVector<const char *> &path, bool *found = nullptr) const;
    void mergeConfig(const QVariantMap &other);
    static QByteArray substituteVars(const QByteArray &str, const QString &fileName,
                                     QStringList *deploymentWarnings = nullptr);

protected:
    QStringList m_defaultConfigFilePaths;
    QString m_buildConfigFilePath;
    QCommandLineParser m_clp;
    QVariantMap m_config;
};

template<> bool Configuration::value(const char *clname, const QVector<const char *> &cfname) const;
template<> QString Configuration::value(const char *clname, const QVector<const char *> &cfname) const;
template<> QStringList Configuration::value(const char *clname, const QVector<const char *> &cfname) const;
template<> QVariant Configuration::value(const char *clname, const QVector<const char *> &cfname) const;

QT_END_NAMESPACE_AM

